[all-commits] [llvm/llvm-project] 41165f: [DAG] SimplifyMultipleUseDemandedBits - simplify I...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 41165fd5d503b4297cb1033fdeb1688ce0863b68
      https://github.com/llvm/llvm-project/commit/41165fd5d503b4297cb1033fdeb1688ce0863b68
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2026-09-25 (Fri, 25 Sep 2026)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/AMDGPU/cvt_f32_ubyte.ll
    M llvm/test/CodeGen/AMDGPU/shufflevector.v3bf16.v2bf16.ll
    M llvm/test/CodeGen/AMDGPU/shufflevector.v3f16.v2f16.ll
    M llvm/test/CodeGen/AMDGPU/shufflevector.v3i16.v2i16.ll
    M llvm/test/CodeGen/X86/bfloat.ll
    M llvm/test/CodeGen/X86/dag-topological-sort.ll
    M llvm/test/CodeGen/X86/load-partial-dot-product.ll

  Log Message:
  -----------
  [DAG] SimplifyMultipleUseDemandedBits - simplify ISD::SCALAR_TO_VECTOR to ISD::POISON if we don't demand 0th element (#225530)

Equivalent fold to SimplifyDemandedBits/SimplifyDemandedVectorElts

Fixes a number of minor regressions from #217185



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